1240260001 has 4 divisors (see below), whose sum is σ = 1242916272. Its totient is φ = 1237603732.

The previous prime is 1240259989. The next prime is 1240260011. The reversal of 1240260001 is 1000620421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000620421 = 389 ⋅2572289.

It is a cyclic number.

It is not a de Polignac number, because 1240260001 - 2²⁵ = 1206705569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240260011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327435 + ... + 1328368.

It is an arithmetic number, because the mean of its divisors is an integer number (310729068).

Almost surely, 2^1240260001 is an apocalyptic number.

It is an amenable number.

1240260001 is a deficient number, since it is larger than the sum of its proper divisors (2656271).

1240260001 is an equidigital number, since it uses as much as digits as its factorization.

1240260001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656270.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1240260001 is about 35217.3252959392. The cubic root of 1240260001 is about 1074.4121541051.

Adding to 1240260001 its reverse (1000620421), we get a palindrome (2240880422).

The spelling of 1240260001 in words is "one billion, two hundred forty million, two hundred sixty thousand, one".